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Finding the Fourth Proportional to 85,608.48, 128,392.56 and 48,184.48

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Solution

The fourth proportional to 85,608.48, 128,392.56 and 48,184.48 is: 72,265.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,608.48 : 128,392.56 = 48,184.48 : x
  2. Step 2: Convert to fraction form
    85,608.48/128,392.56 = 48,184.48/x
  3. Step 3: Cross multiply
    85,608.48x = 128,392.56 × 48,184.48
  4. Step 4: Simplify right side
    85,608.48x = 6,186,528,739.47
  5. Step 5: Solve for x
    x = 6,186,528,739.47/85,608.48
  6. Step 6: Final answer
    x = 72,265.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.